单一饲料、饲料添加剂、添加剂预混合饲料生产企业应办理生产许可证和产品批准文号。

—You didn’t go to Europe, why?

—I _____ this morning, but I _____ to Shanghai because of an emergency .

A．was to start; am going

B．was scheduled to start; will go

C．should have started; am going

D．would like to start; will go